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Finding the Fourth Proportional to 656,632.87, 984,978.80 and 201,190.73

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Solution

The fourth proportional to 656,632.87, 984,978.80 and 201,190.73 is: 301,795.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,632.87 : 984,978.80 = 201,190.73 : x
  2. Step 2: Convert to fraction form
    656,632.87/984,978.80 = 201,190.73/x
  3. Step 3: Cross multiply
    656,632.87x = 984,978.80 × 201,190.73
  4. Step 4: Simplify right side
    656,632.87x = 198,168,603,806.52
  5. Step 5: Solve for x
    x = 198,168,603,806.52/656,632.87
  6. Step 6: Final answer
    x = 301,795.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.